Circuitry II. Name: Date: Section C D F. Mr. Alex Rawson Physics

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1 Name: Date: Section C D F Circuitry II Mr. Alex Rawson Physics 1. Three resistors of 100, 140, and 80 are placed in a series circuit. a. Find the equivalent resistance. (Your answer should be between ) b. If you were to place these three resistors in parallel, what would the equivalent resistance be? (Your answer should be between ) 2. By how much is the resistance reduced if you change the circuitry of three 20 resistors in series to three 20 resistors in parallel? (Your answer should be between ) 3. The circuit below has a 24 V battery connected to resistors R 1 = 6, R 2 = 10, R 3 = 9, R 4 = 5. Calculate the equivalent resistance and the net current of the circuit. (Your answer should be between 20 35, and between 0 1 A, respectfully) R 4 R 3 R 2 R 1

2 4. Three resistors are connected in series with an 18 V battery. R 1 = 2, R 2 = 4, R 3 = 6 a. Draw a schematic diagram. b. Determine the equivalent resistance, and net current for the circuit. (Your answer should be between 10 20, and between 1 3 A respectfully) c. Determine the current in each resistor, and the potential difference across each resistor. (Each resistor should have the same current, and the sum of the potential differences should equal the potential difference in the battery) 5. Three resistors are connected in parallel with a 24 V battery. R 1 = 6.0, R 2 = 12.0, R 3 = 18.0 a. Draw a schematic diagram. b. Determine the equivalent resistance, and net current in the circuit. (Your answer should be between 0 10, and between 0 10 A respectfully) c. Determine the current in each resistor, and potential difference across each resistor. (The sum of the currents should equal the net current, and each resistor should have the same potential difference)

3 Name: Date: Section C D F Circuitry III Mr. Alex Rawson Physics 1. An 11.0 resistor and a 6.0 resistor are connected in series with a battery. The potential difference across the 6.0 resistor is measured as 9 V. Find the potential difference across the battery. (Your answer should be between Volts) 2. A 18.0 resistor and a 6.0 resistor are connected in parallel to a battery, and the current in the 18.0 resistor is found to be 0.45 A. Find the potential difference across the battery. (Your answer should be between 5 10 Volts) 3. Two identical parallel-wired strings of 40 bulbs are connected to each other in series. If the equivalent resistance of the combination is when it is connected across a potential difference of V, what is the resistance of each individual bulb? (Your answer should be between 2 3 k ) 4. Find the equivalent resistance of the circuit shown below, if R 1 = 13.0, R 2 = 24.0, R 3 = 10.0 and R 4 = 3.0. (Your answer should be between )

4 5. The equivalent resistance of the circuit below is If R 1 = 45.0, R 2 = 5.0, R 3 = 5.0 and R 4 = 45.0, find the resistance of R. (Your answer should be between ) 6. Re-draw the schematic diagram below, and then find the equivalent resistance of the circuit. Let R 1 = 8.0, R 2 = 6.0, R 3 = 7.0, R 4 = 6.0 and R 5 = 4.5. (Your answer should be between )

5 Name: Date: Mr. Alex Rawson Physics Section C D F Circuitry IV 1. Two resistors, A and B, are connected in series to a 6.0 V battery. A voltmeter connected across resistor A measures a potential difference of 2.4 V. When the two resistors are connected in parallel across the 6.0 V battery, the current in B is found to be 1.2 A. Find the resistances of A and B. (Your should find that A B, but both resistances should be less than 10 ) 2. Three resistors are connected in parallel an 80 resistor, a 16.0 resistor, and a 20 resistor, and then joined in series to a 12.0 resistor from a battery source with a potential difference of 24.0 V. a. Draw a schematic diagram for this circuit. b. Calculate the equivalent resistance and the net current in the circuit. (Your answers should be between 15 22, and 1 2 A, respectively) c. Find the current and potential difference in each resistor. (Remember your rules)

6 3. Four resistors are connected to a battery with a terminal voltage of 12.0 V, as shown in the figure below. Assume that R 1 = 30.0, R 2 = 80.0, R 3 = and R 4 = 15.0 ) a. Re-draw the circuit. b. Determine the equivalent resistance and the net current in the circuit. (Your answer should be between 50 70, and 0 1 A, respectively.) c. Determine the potential difference in the 30 resistor. (Your answer should be between 2 3 V)